VIPARSPECTRA KS3000 LED Grow Light 320 watt with Samsung LM301H Diodes, Uniform PPFD Dimmable Daisy Chain 4 Bars Grow Lights for Indoor Plants Full Spectrum Plant Growing Lamps in 3x3 Grow Tent

Tight fit in my ipower 3x3 love the long wires to feed the light and power supply, heat is about the same as my viper p2000 different air flow with bar style light than the big board style still trying to dial in my VPD now can’t wait to see plant flourish , I resurched this light it has the best power per watt to led par output 30% better coverage , all the others show to much parr in the middle and weak corners , my other viper light is 200 watts p2000 and works wonderfully I got like 9 ounce out of 2 plants with 200 watts viper spectra is the best value hand down, I waited and watched the price of this light go up and down for a year then it dropped below 200 to 189 so I jumped on it very nice light big beautiful power supply with long cord love this light company very good stuff

Viparspectra really knocked it out of the park on this one. The light is very well built, time will tell on its longevity. Used it for one run so far and it yields great. My light meter had it slightly higher than its rated brightness, and the coverage is excellent from all areas under the lights. Excellent light penetration. It runs circles around other budget lights, and gives premium brands a run for their money, possibly surpassing them. I’ve been using viparspectra lights since the advent of the blurple lights, and this thing is another hit. Hope to use it for years to come.

This isn't the absolute brightest light you can get, but at this price you are not going to beat this. Plenty of light for all phases and the panel style has really good light uniformity across a 4x4 space. With that said, this is not going to replace a 1000 watt HPS. You are pulling 500 watts from the wall with this light, and you'll get around half the PAR that a good quality HPS can do; However, you will get the same PAR at the corners as an HPS due to the better uniformity of the panel design, which is becoming standard in LED lights. You also will not have the heat management you would with an HPS.I would call this a very solid starter or budget light. You will get very good results using it. If you're looking to get the same light output as an HPS, be prepared to spend around 3 - 5 times this much but make sure you are running everything that can take advantage of that kind of light (C02, etc...). For me, I have a larger tent with a couple higher end lights and I just didn't want to break the bank to fill out the space. I have good overlapping light from the space and this light does everything I need it to do.

I have purchased 2 of the KS3000 light fixtures and I am thoroughly pleased with the performance and quality of these lights. The dimming ability is very nice so you can use the proper amount of light needed during the growth of plants.I was really pleased with how the company stands behind their products. One of the units I have starting having strobing issues with the driver after a little over a year from purchase. After some troubleshooting help with their tech staff, it was determined to be a slight defect with that driver. The company sent a replacement driver to me without pro-rating and charging me for the time I have used the product. They are an outstanding company, I will certainly purchase more of their products and tell my friends as well.They are certainly a top notch company.

the KS5000 is a dope light, Its built well, came perfect condition everything has been running smoothly right out the box. Out of all my lights this light stays the coolest, even compared to some 200 watt lights I have set up. It might not push the hardest compared to some higher priced lights, but it pushes hard enough unless you are supplementing with C02, that doesnt really matter. I will be buying another one. The only thing I cant speak on, is customer service. But hopefully if I ever need them, they will show up. This is a good purchase for your indoor garden. Will update a little further down the road with some more use.-updateSo I bought a second KS5000 and it works perfectly right out the box, 2 for 2 on this light. It's not the most powerful, its not the game changing tech. BUT its a solid light, ESPECIALLY if you don't use C02.ive never had to reach out to customer service so i cant speak on that, but if your thinking about this light and you're on the fence. Buy it, its cheaper than Mars and Spider and performs agruably the same if not better

Super output and spread/coverage, I'm convinced the bar-style lights are the best in terms of lighting uniformity. Even better with an AC Infinity controller & conversion cable. My Irish moss seed sprouted rapidly and grew quickly; no leggy plants here! Very good/functional/adjustable suspension paracord hangers are included. You don't need anything better or longer. 10 out of 10 in those categories. The only negative is that the lights (and especially the power supply) really heat up the room despite the lights being LEDs. They could certainly make the power supply more efficient & run cooler. Then these lights would be truly 5 stars overall; currently they are really 4 1/2 stars. But I would buy them again, they are really good!

Great grow light for the price! Even coverage with powerful diodes. My plants can’t get enough of this light. Stop contemplating and just buy it already… pull the trigger!

Had some trouble with 1 unit! You must be persistent with email to company about defective replacements. In the End they seem to make it right! Love the lights! As long as they function properly out of the box I’ve had no issues! Not sure why Amazon customer service was having so much problem resolving my issue. First they offered money back. I asked representative to reach out to company to send me a new LED Driver for manufacture defective piece! They wanted me to give my light back. Haha, not a chance. Then after I struggled to get a response from Viparspectra team I considered returning the light & Amazon didn’t to even return it. Said they were gonna look into it and call me back . Never heard back from them about my issue with the brand new device that wasn’t working correctly fresh outta the box . Buy a big purchase & all a sudden they couldn’t help make it right. Made me think twice about my prime membership or future purchases. I didn’t like how that went. I did everything that the instruction manual indicated with contacting Amazon. They just couldn’t seem to listen what the viparspectra Service department was able to resolve with a simple Replacement LED Driver. That’s all I wanted to begin with. Don’t want my money back, don’t want anything for free, but I do want a device that operates as the description says Amazon.

So far I’m loving the lights, I have been using them during blooming for my plants and they love it! The lights feel very well built and the pulley system is super easy to work with. The lights do give off a bit of heat but more so the feeling of heat from sunlight and not radiating heat, as the driver can be placed outside the grow room.They also had amazing customer service and that’s so rare nowadays! I bought these lights at a higher price before the price decreased a few days later and they honoured the lower price, no hassle.Overall very happy with the lights and amazed by their customer service!

Light is great, easy to set up, very capable of filling a 4x4 tent, now on my 5th crop and it has worked perfect, zero problems, would recommend this light for anybody setting up a 4x4 tent follow Vipar`s instructions and you`re on your way 25% seedlings, 50% early veg ,75% veg, 100% flower, best yet

So far this is the most expensive light I have purchased. I wanted one light for a 4 x 4 space instead of a few small ones. This one is amazing. I set it up by myself, though two would have been better. Cables were more than long enough for just about any setup. The unit has some weight to it and feels very solid. The dimmer is makes firm clicks when changing light settings and you can tell when you change the light settings. This is a very bright light. I will be saving my pennies to purchase one for each of my 4 x 4 tables.I have not had it long enough to test a growth out yet, but I am preparing pepper plants and will be changing this review if things go badly.It came shipped in a thick cardboard box. During shipping, it looked like someone put their boot to the center of the box. I was worried while unboxing that there was damage. The box had protection on all sides inside the box, and where the damage was, there was more protection for the controller unit and the light. No damage made it to the light or any other parts in the box.I most definitely will be buying more of these lights.

This light is fantastic. Grown in a 1mx1m tent this thing is all the light I need. I switched from 2 mars hydro to 1000s. The coverage is like night and day. I highly recommend this light or the ks5000 for a 4x4. I'm really impressed thanks viparspectra!

I have had several lights over the years. But this one tops the cake! My Autos have been under it for 2 days now and I’ve noticed a huge difference already for the better! Fits nicely in a 4x4 with good coverage. Don’t pass this light up especially if there’s a sale! You will not be disappointed!